1.8.4

- fix: discard writer type

- code style cleanup

1.8.3 - released on 2025.01.01

- performance improvements

- minor documentation update

- fix: compiler warnings

- fix: information about changed schema

1.8.2 - released on 2024.12.27

- fix: IOT tables not properly skipped

1.8.1 - released on 2024.12.25

- fix: archived redo logs are not fully processed

1.8.0 - released on 2024.12.21

- code style cleanup

- changed parameters "scn" and "scn-all" -> "scn-key"

- enhancement: add key data to messages

- fix: minor bug related to swapping

- enhancement: performance optimizations

- enhancement: add support for DDL text > 4k

- fix: sometimes direct IO was not working

1.7.0 - released on 2024.09.30

- fix: welcome banner

- code style cleanup

- fix: diagnostic information populated when not enabled

- enhancement: add dictionary values for TIMEZONE database parameter

- enhancement: add parameter -r|--root to disable root check on startup

- fix: in rare cases column value is null instead of actual value

- fix: when a redo log file is truncated, read error might appear

- documentation update

- fix: missing include for some systems

- enhancement: thread performance information

- enhancement: swap memory to disk in low memory situations

1.6.0 - released on 2024.05.31

- enhancement: add parameter -p

- enhancement: performance optimizations

- enhancement: add offset to payload for debugging purposes

- enhancement: support UPDATE operations for NOT NULL columns with occasional NULL values (experimental)

- enhancement: add JSON validation for invalid tags

- fix: context field contains invalid value

- fix: invalid tag in example json config file

- fix: online redo logs are read in rare cases for archived redo log only mode

- fix: don't write checkpoint file until the first data chunk is processed

- fix: minor bug related to crash with large number of columns

- fix: error: "parse error, attribute xid: not expected"

- fix: in rare cases, the AFTER value for UPDATE is missing

- code style cleanup

- documentation update

- fix: welcome message

1.5.0 - released on 2024.01.29

- code style cleanup

- enhancement: new writer type: discard

- minor code optimizations

- fix: minor bug related to binary xmltype

- fix: correctly display database error codes

- fix: static code analyzer warnings

- fix: checkpointing is not working for online mode after restart

- enhancement: add an option to build statically linked binary

- fix: don't require flag 64 to use experimental XMLTYPE support

- fix: minor bugs related to timestamp formatting

- minor documentation fixes

- enhancement: refactor timestamps, add more output options

- enhancement: collecting metrics using Prometheus

- configuration change: moved memory options "memory-max-mb", "memory-min-mb", "read-buffer-max-mb" to "memory" group and renamed to "max-mb", "min-mb"

1.4.0 - released on 2023.12.23

- fix: date and timestamp with year before 1900 or after 2262 produce incorrect values

- enhancement: unify gencfg.sql script for 11g and 12+

- fix: bad checkpoint file causes startup to fail with no explanation

- fix: fail with a too short field length message

- code style cleanup

- fix: LOB data handling

- enhancement: add session information to output

- enhancement: add row filtering based on condition

- experimental: support for binary xmltype, added document about experimental features

- enhancement: added support for BOOLEAN data type

- enhancement: added support for database version 23c

- enhancement: database version 23c: set column limit to 4096

- clang-tidy code reformatting

1.3.0 - released on 2023.10.02

- doc: updated README.md, added reference to a tutorial GitHub project

- fix: PDB/CDB support

- fix: unified comment style

- fix: checkpoint file is not created when no data is replicated after start

- fix: offline startup failed to read redo log files

- fix: DDL operation that rearranges columns is not handled properly

- enhancement: reload config file for schema update after the file is updated

- fix: stacktrace when processing DDL data to protobuf format

- fix: typo in trace message

- enhancement: added more timestamp formatting options

- enhancement: added support for UROWID format

- fix: LOB handing improvement for database version 19c

- enhancement: added timezone field for timestamp with a timezone type

- fix: file writer path handling and file handling fixes

- enhancement: add database name to payload data

- enhancement: add schema information for ddl events

- fix: correctly handling of non-ASCII characters in DDL text

- enhancement: added support for an interval type

- enhancement: added xmltype support

- enhancement: added support for type timestamp with local time zone

- fix: client stream disconnect causes replication to stop

- enhancement: added options interval-ytm and interval-dts to control interval type output format

- fix: minor style fixes

- fix: network client date was not consistent when reconnected

- fix: scn informatio

n inconsistency in transaction fix

- enhancement: added flag 2 for "scn" field type to control scn values

- enhancement: changed checkpointing mechanism to allow more frequent checkpoints

- experimental: added partial support for binary XMLType data

- enhancement: performance optimizations

1.2.0 - released on 2023.03.31

- doc: Introduction to OpenLogReplicator

- fix: minor bug related to sending ddl operations to output

- fix: minor parameter validation bug

- fix: minor issue related to sending character data in hex format for debug purposes

- cleanup in parameter names: renamed "max-size" "max-file-size" and "format" to "timestamp-format" for better understanding

- doc: Commands Reference Manual

- doc: Log Messages Guide

- doc: Installation Guide

- doc: Release Notes

- doc: Troubleshooting Guide

- doc: User Manual

- fix: treat character decoding issues as warnings

- fix: removed obsolete example file

- fix: removed obsolete files

- changed "trace" parameter to "log-level"

- changed "trace2" parameter to "trace"

- fix: unification of log messages

- change: config file version is "1.2.0"

- fix: changed type of nullable field from numeric to boolean

- fix: uncaught exception in writer module

- fix: protocol buffer message missing scn data

- fix: allow server to handle bad start requests for network mode

- fix: network client display fixes and handle big messages

- fix: network client memory release on error

- change: removed "max-messages", "enable-idempotence" and "brokers" parameters and added "properties" parameter instead

- change: by default checkpoint messages are not sent to output

- fix: compilation error when Kafka is disabled

- fix: checkpoint did not advance when no data was replicated

1.1.0 - released on 2023.03.19

- debug: trace formatting changes

- enhancement: add handling of OP 26.2 for experimental LOB support

- fix: experimental LOB support

- enhancement: code style corrections

- fix: error handling of incorrect config file

- fix: experimental LOB support Unicode character decoding

- new feature: basicfile LOB (removed being experimental)

1.0.1 - released on 2023.02.20

- fix: incorrect checkpoint file when non-ascii characters are used in schema files

- fix: incorrect message printed on error

- fix: allow to use stop-* parameters without using schemaless mode

- enhancement: added consistency checks for experimental LOB support

- fix: standardization of output messages

- fix: race condition might result in transaction data loss

- fix: experimental LOB support schema script error

- enhancement: optimized DDL processing speed

- enhancement: added debug info for release builds

- enhancement: added support for database version 19.18 and 21.8

- fix: experimental LOB data missing

1.0.0 - released on 2022.12.10

- copy from 0.9.58

0.9.58

- added support for database version 19.17 and 21.7

- bug fixes

- code cleanup

0.9.57

- fixed compilation warnings for Release

0.9.56

- bug fixes

0.9.55

- experimental lob 12.1+ fixes

- fixed bugs related to schema & checkpoints

0.9.54

- bug fixes

0.9.53

- bug fixes

0.9.52

- experimental LOB processing fixes

- minor bug fixes

- code style cleanup

0.9.51

- added support for binary_float, binary_double types

0.9.50

- big fixes & code rewrite

- added experimental support for LOBs

- added support for database version 19.15 and 21.6

- added "dump-xid" parameter to config file

0.9.49

- small fixes

0.9.48

- fixed old checkpoints deletion

0.9.47

- small fixes

0.9.46

- small thread fixes

0.9.45

- small fixes

0.9.44

- fixed compilation errors for Release target

- small fixes, minor code cleanup

0.9.43

- fixed compilation errors for Release target

- code style fixes

- minor fixes

- fixed issues related to standby database handling

0.9.42

- moved from Makefile to Cmake

- major code refactor, removed spaghetti code, divided code into separate modules, name cleanup, style cleanup, etc.

- fixed and extended logdump output

- fixed minor issues

- updated config file format

- added new parameter: "keep-checkpoints"

- removed experimental not working code: ASM support, RocketMQ, Redis"

- changed "debug"."flush-buffer" to "debug"."flush-on-exit" in json config

- fixed pre-1970 timestamp values in Unix format

0.9.41-beta

- conversion bug fixes

0.9.40-beta

- performance optimizations

0.9.39-beta

- fixed some logdump output

- fixed bug: displayed warning about kteop field size

- added support for database version 19.14 and 21.5

- big code cleanup and rewrite of some parts

- fixed bug: split undo record + rollback was not properly handled

- fixed bug: sometimes supplemental redo log was missed

- fixed bug: sometimes partially rolled transactions were improperly handled

- changed database version client to 19.14

- cleanup in file access flags

0.9.38-beta

- minor code cleanup

- changed database version client to 19.13

- bumped up year

- fixed some logdump output

- fixed bug: batch mode failed

0.9.37-beta

- code cleanup - removed default namespaces

- fixed bug: reading failed when switch to standby was run

0.9.36-beta

- fixed Kafka compilation errors

- fixed Protobuf compilation errors

0.9.35-beta

- fixed bug: throwing exception in constructor [#28]

- fixed bug: throwing exception in callback functions for Kafka module

- fixed bug: error "split undo is broken" when undo for op code 11.22 split

- fixed bug: reading from standby redo log files failed during switch

- optimized database connection handling

0.9.34-beta

- fixed bug: reading from standby database

- removed distinct config for standby database: "online-standby" is not required, use "online" instead

0.9.33-beta

- fixed bug: throwing unhandled exception from callback functions

- fixed bug: after resetlogs starting redo log number might be incorrect

- fixed bug: stacktrace when cancelled and no database connection

- fixed bug: database server restart was incorrectly handled

- fixed bug: forced checkpoint files creation in case of log switch

- OpenLogReplicator.json: updated format version to 0.9.33

- OpenLogReplicator.json: changed "checkpoint" to "state"

- OpenLogReplicator.json: changed "all" to "all-checkpoints" in "state"

- OpenLogReplicator.json: added option "type" in "state"

- forced creation of checkpoint files for redo log switch and some other conditions

- optimized schema parameters read operation

- added support for database version 19.13.0, 21.4.0

- added support for database resetlogs operation

0.9.32-beta

- changed LWN buffers from 512 to 1024 to avoid error "[ERROR] all 512 LWN buffers allocated"

0.9.31-beta

- welcome message includes list of compiled modules

- minor message fixes

- removed collecting SYS.SEG$ from DDL track code

- fixed bug: multiplication of redo log files in schema file

- fixed bug: "flags" parameter value verification

- minor changes in gencfg.sql

- OpenLogReplicator.json: updated format version to 0.9.30

- OpenLogReplicator.json: added new parameter: "dump-path"

0.9.30-beta

- added target: Apache RocketMQ (experimental)

- OpenLogReplicator.json: updated format version to 0.9.30

0.9.29-beta

- fixed bug: "disable-checks" parameter value check

- fixed bug: schemaless mode failing with compressed tables

- fixed bug: incorrect string offset in checkpoint file

- fixed bug: reading from inactive online redo log could print warnings/errors

- fixed bug: merging split undo blocks could sometimes fail

- fixed bug: schemaless processing failed with DML commands

- fixed bug: direct read mode was not working

- fixed bug: null values where added for unknown values

- added content checks for redo decoder/column integrity

- added support for unused columns ("flags" parameter have shifted)

- OpenLogReplicator.json: default for "redo-verify-delay-us" is 0 when direct io is used, else 500000

- minor code cleanups

0.9.28-beta

- fixed checkpointing on instrumented shutdown

- removed LWN checking from version 0.9.27-beta

0.9.27-beta

- added verification checks for LWN header

- changed "sequence" to "seq" in checkpoint file - you might need to update manually json checkpoint files

- fixed bug: incorrect con length read from schema file

- added some tracking debug info

- added check for ignoring binary objects (like xmltype, object)

- removed debug table from output (to make testing easier)

- removed warning for 11.2 during ALTER TABLE ADD COLUMN with DEFAULT

- fixed bugs related to checkpoints

- fixed bug: sending checkpoint messages for already confirmed SCN

0.9.26-beta

- fixed memory leaks during abnormal exit

- added content validation for checkpoint files

- added length check for reading JSON config and checkpoint files

- added minor performance optimizations for JSON output

0.9.25-beta

- fixed bugs in gencfg.sql

- added checks for block size in redo header

- added consistency checks for schemas

- OpenLogReplicator.json: renamed parameter "arch-read-retry" to "arch-read-tries"

- OpenLogReplicator.json: updated format version to 0.9.25

0.9.24-beta

- updated automake to version 1.16.3

- fixed typo bugs in example JSON files

- display performance decoder also for online redo logs ("trace2": 256)

- fixed null values for mode "column": 1, 2

- enhanced read error messages

- updated README.md

0.9.23-beta

- hidden constraint value for nested tables

- fixed bug: in idle used 100% CPU

- quick fix for skipping compressed rows (experimental)

- OpenLogReplicator.json: changed default for "redo-read-sleep-us" parameter from 10000 to 50000

0.9.22-beta

- added support for database version 21c (21.3)

- OpenLogReplicator.json: field length limit for broker is 4096, topic is 256, context is 30, database to 256

0.9.21-beta

- added length checks for string types

- minor code cleanup & optimization to reduce memory allocations

0.9.20-beta

- changed database client to 19.12

- build scripts compiled with newer autotools

- fixed bug with output file path for json decoder

0.9.19-beta

- added support for database version 19.12.0

- added stacktrace print on signal USR1

0.9.18-beta

- fixed bug: scn could become 0 in checkpoint record when redo log files was empty (had just 2 pages)

- NetworkClient - fixed bug with memory leak on abnormal exit

- fixed memory leak for network library

- fixed bug in Protobuf output module

0.9.17-beta

- code cleanup to be become more compliant

- fixed memory leak on abnormal exit

- fixed startup based on checkpoint decoder

- fixed schema tracking after restart

- fixed bug: sometimes log switch checkpoint was missing

- minor code cleanup & fixes

- OpenLogReplicator.json: updated format version to 0.9.16

- OpenLogReplicator.json: enhanced content validation, fixed and extended syntax checking

- OpenLogReplicator.json: increased default of redo-verify-delay-us to 250000

- OpenLogReplicator.json: renamed "sources" to "source"

- OpenLogReplicator.json: renamed "targets" to "target"

- OpenLogReplicator.json: renamed "redo-logs" to "redo-log"

- OpenLogReplicator.json: protobuf/json output: added optional payload numbering ("message" = 2)

- OpenLogReplicator.json: optional begin transaction for output ("message" = 4)

- OpenLogReplicator.json: optional commit transaction for output ("message" = 8)

- OpenLogReplicator.json: new element in "source": "filter"

- OpenLogReplicator.json: moved "tables" to "filter" and renamed to "table"

- OpenLogReplicator.json: added transaction filtering based on XID ("skip-xid")

- OpenLogReplicator.json: added transaction filtering based on size ("transaction-max-mb")

0.9.16-beta

- added check of schema file for changing list of owners of replicated tables

- added check for schema/table name entered in upper case

- minor fixes

0.9.15-beta

- version is no longer used in schema file, instead is used config schema version, currently "0.9.15"

- removed call OCITerminate on exit which caused memory leak from OCI

- added information about schema dropped schema for dropped (or altered) tables

- added check to prevent run as root

0.9.14-beta

- fixed bug: sometimes hanged during shutdown while running OCI

- fixed bug: regex might used improperly

- added check for GCC 4.9

- changed run argument, use -f for specifying custom file

0.9.13-beta

- updated example files names

- fixed JSON output for DDL commands

0.9.12-beta

- fixed bug, when schema file is present reading from archived redo log cause stacktrace

0.9.11-beta

- fixed protobuf checkpoint code (#23)

- fixed sending output to stdout instead of file for "file" mode

- fixed bug for merged values

- fixed json format for schemaless mode

0.9.10-beta

- change "name" to "output" for writer file mode

- added "max-size", "new-line", "format", "append" schemaElements to writer file mode

- file output can rotate output file with defined max size

- internally changed identifier 0 value to -1 for file descriptor

- fixed DDL tracking for some commands (alter table modify column, alter table add subpartition, etc.)

- fix creating log groups multiplication in schema file

- added displaying error information for errno code

- added disk read retry

0.9.9-beta

- fixed subpartition schema load/save

- fixed DDL tracking for columns

- added (sub)partition count for schema list

0.9.8-beta

- fixed compilation errors when g++ is used

0.9.7-beta

- fixed small bug with passing config OpenLogReplicator.json path at startup

0.9.6-beta

- added checks for OpenLogReplicator.json content

- fixed compilation errors when newer gcc version is used

0.9.5-beta

- objects where SYS.OBJ$ is present but SYS.TAB$ entry missing are ignored

- minor optimizations

- moved config file location: OpenLogReplicator.json to scripts/OpenLogReplicator.json

- moved checkpoint file location: <database>-chkpt.json to checkpoints/<database>-chkpt.json

- ./OpenLogReplicator -v|--version - to print banner and exit

- ./OpenLogReplicator custom_path/config.json - to run with custom config file location

0.9.4-beta

- changed conditions for displaying warning of CRC error

- fixed bug in reader module introduced in version 0.9.3-beta which could lead to core dump

0.9.3-beta

- performance improvements

- changed default disk read buffer size to 32MB

0.9.2-beta

- added parameter "rid" for "format"

- by default row id is not included in the output

- online mode: fixed startup by seq

- updated protobuf output module to be in sync with json code

- rewritten column handling to avoid performance issues due to memory allocation/de-allocation

- decreased contention on locks, internal buffer is flushed less often

- inlining code to create output stream in json format

- inlining some code for red log parsing

- corrected performance measuring throughput

0.9.1-beta

- added scrips/gencfg.sql file - to create schema file for offline mode

- OpenLogReplicator.json: added debug parameters to allow instrumented shutdown during tests: shutdown after reaching defined number of checkpoints, transactions or redo log switches

- OpenLogReplicator.json: flush on shutdown parameter rearrangement

- OpenLogReplicator.json: moved instrumented table to debug section

- protobuf request format: moved seq outside tm_val

- allowed initial start with defined both SEQ & SCN

- minor format changes in JSON schema files

- online mode: added connection check & reconnect in case connection is closed

- online mode: minor SQL fixes

- online mode: fix getting log_archive_format parameter for non-FRA databases

- minor code fixes/enhancements/code cleanup

0.9.0-beta

- initial beta version